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Mathematics
Mathematics
Problem
If
a
,
b
a, b
a
,
b
are vectors perpendicular to each other and
∣
a
∣
=
2
,
∣
b
∣
=
3
,
c
×
a
=
b
|a| = 2, |b| = 3, c \times a = b
∣
a
∣
=
2
,
∣
b
∣
=
3
,
c
×
a
=
b
, then the least value of
2
∣
c
−
a
∣
2|c - a|
2∣
c
−
a
∣
is
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